| 651f13cea278ec967336033dd032faef0e9fc2ec |
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24-Apr-2014 |
Stephen Hines <srhines@google.com> |
Updated to Clang 3.5a.
Change-Id: I8127eb568f674c2e72635b639a3295381fe8af82
/external/clang/test/CodeGen/ppc64-varargs-struct.c
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| 3b334036d3ee581352cfe62ccac0e4c6592bcf35 |
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26-Oct-2012 |
Bill Schmidt <wschmidt@linux.vnet.ibm.com> |
This patch is a follow-up to r166805. As suggested on-list, a check was
added to ensure no extra alignment code is added in the future.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166812 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/test/CodeGen/ppc64-varargs-struct.c
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| 485717e8e43034d653ccd7f35f4546773e016e27 |
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26-Oct-2012 |
Bill Schmidt <wschmidt@linux.vnet.ibm.com> |
This patch addresses a 64-bit PowerPC ELF ABI compatibility issue with
varargs parameter passing.
A strict reading of the ABI indicates that any argument with alignment greater
than 8 may require skipping doublewords in the parameter save area to align
the argument, and hence require skipping GPRs. In practice, this is not done
by GCC. The alignment restriction is used for internal alignment of a
structure, but a structure with 16-byte alignment, for example, is not
itself 16-byte aligned in the parameter save area. Although this is messy,
it has become the de facto standard used in building existing libraries.
My initial varargs support followed the ABI language, but not the de facto
standard. Running the GCC compatibility test suite exposed this issue, and
indeed showed that LLVM didn't pass parameters self-consistently with my
original logic. Removing the additional alignment logic allows the affected
tests to now pass.
I modified the ppc64-varargs-struct.c test case to remove the existing test
for generation of alignment code, which is no longer appropriate.
Built and tested on powerpc64-unknown-linux-gnu with no new regressions.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166805 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/test/CodeGen/ppc64-varargs-struct.c
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| 3645056edb2f7dedc2e6153428f8f1adecc29687 |
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04-Oct-2012 |
Bill Schmidt <wschmidt@linux.vnet.ibm.com> |
Fix the CodeGen/ppc64-varargs-struct.c test case to tolerate release builds.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165247 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/test/CodeGen/ppc64-varargs-struct.c
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| 61e404e36c914476938db67d873a0df32c6c3a9c |
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04-Oct-2012 |
Bill Schmidt <wschmidt@linux.vnet.ibm.com> |
Add a test case for r156143, which enabled general varargs support for the
64-bit PPC SVR4 ABI.
The test verifies passing of structures, items with 16-byte alignment, and
small items that are passed right-justified in the parameter save area slot.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165245 91177308-0d34-0410-b5e6-96231b3b80d8
/external/clang/test/CodeGen/ppc64-varargs-struct.c
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